Coal -free electric motor (brushless) very high performance produced by the world\'s leading thermal engine manufacturer. Equipped with a reinforced external housing, mounted on large ball bearings with the original O.S. To deliver maximum power for a very long time thanks in particular to the use of very high quality materials and thanks to very high machining precision. Supplied with stainless steel propeller adapter and fixing accessories. This engine is equivalent to an 8 to 8.5cc thermal engine. It requires the use of a 50a speed drive and a lipo battery of 3 to 4 elements, it allows to use propellers from 12x8 to 14x10. 14 pole engine, KV: 810. Carter diameter: 50mm. Carter length: 42mm. Axis diameter: 6mm. Axis length: 11.7mm. Weight: 234g. 4mm sockets.